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Rao, Sajjad Ali; McNeilly, T.

doi:10.1023/a:1003612411293

Cited by 26 publications

(1 citation statement)

References 27 publications

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“…Although there are several strategies to increase wheat production in salt-affected areas (such as leaching and drainage), cultivation of salt-tolerant genotypes is known to be the most effective way to increase wheat production in agroecological regions with soil salinity [ 15 ]. Crops that are tolerant at the seedling stage may also show improved salinity tolerance at the adult stage [ 15 , 16 , 17 , 18 , 19 ]. This means that when a high genetic correlation between early and late stage response exists, a selection for salt tolerance at the seedling stage can serve as a direct, rapid substitute for identifying plants with salt tolerance at the adult stage.…”

Section: Introductionmentioning

confidence: 99%

Validation of a QTL on Chromosome 1DS Showing a Major Effect on Salt Tolerance in Winter Wheat

Mohamed

Siddiqui

Oyiga

et al. 2022

IJMS

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Salt stress is one the most destructive abiotic stressors, causing yield losses in wheat worldwide. A prerequisite for improving salt tolerance is the identification of traits for screening genotypes and uncovering causative genes. Two populations of F3 lines developed from crosses between sensitive and tolerant parents were tested for salt tolerance at the seedling stage. Based on their response, the offspring were classified as salt sensitive and tolerant. Under saline conditions, tolerant genotypes showed lower Na+ and proline content but higher K+, higher chlorophyll content, higher K+/Na+ ratio, higher PSII activity levels, and higher photochemical efficiency, and were selected for further molecular analysis. Five stress responsive QTL identified in a previous study were validated in the populations. A QTL on the short arm of chromosome 1D showed large allelic effects in several salt tolerant related traits. An expression analysis of associated candidate genes showed that TraesCS1D02G052200 and TraesCS5B02G368800 had the highest expression in most tissues. Furthermore, qRT-PCR expression analysis revealed that ZIP-7 had higher differential expressions under saline conditions compared to KefC, AtABC8 and 6-SFT. This study provides information on the genetic and molecular basis of salt tolerance that could be useful in development of salt-tolerant wheat varieties.

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Section: Introductionmentioning

confidence: 99%

Validation of a QTL on Chromosome 1DS Showing a Major Effect on Salt Tolerance in Winter Wheat

Mohamed

Siddiqui

Oyiga

et al. 2022

IJMS

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Molecular Bases of Plant Adaptation to Abiotic Stress and Approaches to Enhance Tolerance to Hostile Environments

Coraggio

Tuberosa

2004

Handbook of Plant Biotechnology

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Abiotic stress has become the greatest threat to global food production and security, particularly in developing countries. Progress in increasing yield and its stability under adverse conditions through a direct selection has been hampered by the low heritability of yield, especially under drought. A better knowledge of the molecular and genetic basis of the mechanisms promoting tolerance to abiotic stress will enhance our capacity to more appropriately manipulate the genes limiting crop yield under hostile environments. This review describes and critically analyses the major advances in our understanding of the complex mechanisms underlying the adaptive response of the plant to abiotic stress, starting with the perception of the stress at the cellular level, its transduction through a cascade of signalling molecules and ending with the induction of genes whose products mitigate the harmful effects of the stress. Molecular markers and the ‘omics’ platforms (e.g., transcriptomics, proteomics, metabolomics etc.) offer unprecedented opportunities to identify and clone the genes governing plant adaptation to environmental stress and limiting yield under such conditions. The dissection of the genetic basis of quantitative traits into their single components, the so‐called QTLs (quantitative trait loci), allows us to deploy marker‐assisted selection (MAS) for enhancing crop performance under adverse conditions. Additional opportunities are also offered by genetic engineering, particularly through the expression of transcription factors regulating a suite of genes whose product is crucial to mitigate the effects of stress. Although the applicative results so far achieved with non‐conventional approaches have been limited, their integration with conventional breeding methodologies and other interdisciplinary approaches will greatly enhance our capacity to more effectively tailor crop genome to withstand harsh environmental conditions and to improve their sustainability under marginal conditions.

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Genetics of Salinity Responses and Plant Breeding

Gorham

Jones

Salinity: Environment - Plants - Molecules

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Cited by 26 publications

References 27 publications

Validation of a QTL on Chromosome 1DS Showing a Major Effect on Salt Tolerance in Winter Wheat

Validation of a QTL on Chromosome 1DS Showing a Major Effect on Salt Tolerance in Winter Wheat

Molecular Bases of Plant Adaptation to Abiotic Stress and Approaches to Enhance Tolerance to Hostile Environments

Genetics of Salinity Responses and Plant Breeding

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